Mold for traps.



J. B. & A. LUKOMSKI.

MOLD FOR TRAYS.

APPLICATION I'ILBD MAY 2, 1014.

1,107,681, Patented Aug. 18, 1914.

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MOLD FOR TRAPS.

APPLICATION FILED MAY 2, 1914.

1, 1 07,68 1 Patented Aug.18, 1914.

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amwmqd JOHN B. LUKOMSKI AND ANTHONY LUKOMSKI, 0F DETROIT, MICHIGAN.

MOLD FOR TRAPS.

Specification of Letters Patent.

Patented Aug. 18, 1914;.

Application filed May 2, 1914. Serial No. 835,814.

To all whom it may concern Be it known that we, J OHN B. LUKOMSKI and ANTHONY LUKOMSKI, citizens of the United States of America, residing'at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Molds for Traps, of which the following is a specification, reference being bad therein to the accompanying drawings.

This invention relates to molds for stenchtraps, siphon pipes, and tubes having a tor tuous or sinuous bore, for instance, that type used in connection with sewers, water closets and drain pipe for preventing the escape of noxious gases or vapors.

The primar object of our invention is to provide a molding apparatus embodying a novel mold that can be casil and quickly handled relatively to a suita le supply of molten metal, as lead, without any danger of the parts of the mold becoming accidentally displaced or an operator injured when pouring the mold.

With the above and other objects in view, the invention resides in the novel construction, combination and arrangement of parts to be hereinafter specifically described and then claimed.

Reference will now be had to the drawings, wherein- Figure 1 is a side elevation .of a molding apparatus showing the pot and furnace in section; Fig. 2 is a front elevation of the same; Fig. 3 is a plan of the lower member of the mold or flask, showing a trap in section; Fig. 1 is a plan of the upper member of the mold or flask detached, showing the molds, matrices and channels; Fig. 5 is a cross sectional view taken on the line VV of Fig. 3 showing the members of the mold assembled; Fig. (5 is a similar view taken on the line VI-VI of Fig. 3; Fig. 7 is a similar view taken on the line VII-VII of Fig. 3; Fig. 8 is a similar view taken on the line VI1I-V1II of Fig. 3; Fig. 9 is a perspective view of a short end core; Figs. 10 and 11 are perspective views of the parts of a collapsible chamber core; Fig. 12 is a perspective view of a long end core, and Fig. 13 is a perspective view of a completed trap.

In describing our invention by aid of the views above referred to, we desire to point out that we intend the same as merely illustrative of an example whereby our invention may be applied in practice, and we do not limit ourselves to the precise construction andarrangement of arts shown. The following description is therefore to be broadly construed as including substitute constructions and arrangements which are the obvious equivalent of those shown.

In the drawings, reference being had to Figs. 1 and 2, 1 denotes the rails of a suitable track and movable upon said track is a four-wheeled truck 2 having an'end thereof provided with a table 3. Mounted upon the inner end of the table 3 is the bearing 4 of a trunnion or pivot pin 5, which supports a mold employed for producing tra s.

The truck 2 is adapted to be shlfted back and forth upon the track 1 and beneath a furnace 6 supported in an elevated position by uprights or columns 7. The furnace 6 is of the ordinary and well known type utilizing oil or gas as a fuel for melting metal, as lead, in a pot 8 mounted in the furnace. The pot 8 is also of a conventional form having a down pipe 9 for the discharge of molten metal and the outlet of the metal is controlled by a valvular member 10 operatable at the front side of the furnace through the medium of a handle rod 11, a fulcrum beam 12 and a valve stem 13. The fulcrum beam 12 is supported by a suitable bearing 1i secured to the front side of the furnace, and the valve stem 13 extends through a detachable lid or cover 15 upon the pot, said detachable lid or cover permitting of metal being placed in the pot for melting purposes.

The mold comprises a lower member 16 and an upper member 17, the former having the bottom side thereof provided with a sleeve bearing 18 whereby it can be pivotally mounted upon the trunnion or pin 5 supported at an inclination by the bearing 4 of the table 3.

The lower and upper members 16 and 17 of the mold are practically identical in construction, particularly the mold cavities and channels, therefore we deem it only necessary to specifically describe the lower member of the mold, shown in Fig. 3, and from time to time consider the members as joined and the advantages derived therefrom.

The lower member 16 has the outer side thereof recessed or webbed, as at 20, to reduce the weight of the same, and the inner flat face of said member has a gate groove 21, a main longitudinal channel 22, branch channels 23, a long matrix 24, a short matrix 25, a-chamber groove 26 and air vents 27. The short matrix 25 and the chamber groove 26 are in an off-set portion 28 of said memberfiand the chamber groove 26 comand the long matrix 24 communicating with the opposite end of the groove.

The gate groove 21 communicates with the short matrix 25 and the chamber 26 through the medium of diverging channels 30and said gate groove also communicates with the main channel 22, which terminates in a pocket 31 adjacent to the end of the member 16 opposite the gate groove 21. For the sake of clearness in describing theinvention, the small end of the member 16 will be hereinafter termed the lower end and the large end of the member the upper end, but in using these terms it is to be understood that our invention is not necessarily limited to a mold having {upper and lower ends, as the mold per so might be used other than in a vertical position.

The main channel 22 communicates with the matrix 24 by the branch channels 23, which are angularly disposed and directed toward the upper end of the member 16. The air vents 27 also communicate with the matrices 24 and 25 and these vents are angularly disposed-and directed toward the upper end of the member.

The upper or outer end of the short matrix 25 is enlarged, as at 32, to accommodate the head 33 of a short end core 34. Theshort core 34 is of a less diameter than the short matrix 25 and the inner end of said core terminates in an elbow 35- having an angle seat 36 with one of the facets thereof provided with a dowel pin 37. The outer end of the short core 34 terminates in a screw threaded stem 38 upon which there is detachably mounted a wrench or handle 39.

The matrix 24' accommodates a long end core 40 having the inner end thereof provided with an elbow 41 similar to the elbow 35, a head 42 and a wrench or handle 43. The head 42 has a socket 44, the purpose of which will appear when considering the upper member 17 of the mold.

The lower end of the chamber groove 26 terminates in a seat 45 for the head 46 of a collapsible core, best shown in Figs. 7, 10 and 11. The head 46 has the outer end thereof provided with a handle 47 and the inner end thereof with a tapering shank 48 having flat side walls 49 provided with dove-tailed tapering tongues 50. These tongues are longitudinally disposed and are adapted to enter similarly shaped grooves 51 in the inner faces of tapering side membars 52 and 53, which co6perate with the 56, the purpose of which will presently appear. The ends of the member 16 are provided with apertured lugs'57 for posts 58 and rotatably mounted upon said posts are sleeves '59 having cams 60 and cranks or handles 61. The inner side of the member 16, adjacent to the posts 58, is provided with dowel pins 62 and these ins are adapted to enter openings 63 provi ed therefor in the member 17 of the mold. The member 17 is adapted to-be placed uponthe member 16 and clamped in engagement therewith by the cams 60 of the rotatable sleeves 59 riding onto the member 17 when the sleeves are rotated, said sleeves" and their appurtenant parts constituting clamping. means for re taining the members 16 and 17 togetherwith their respective matrices, channels, etc.

in registration. The member 17 has open- 5 ings 64 and 65 adapted to register with the sockets 44 and 56, whereby detachable pins 66 can be mounted in said openings and said sockets to hold the long end core 40 and the collapsible core in engagement with the members 16 and 17 of the mold, when the same is in a vertical position.

To facilitate separating the members 16 and 17, particularly after a pouring opera tion, the member 17 has screw bolts 67 contiguous to the ends thereof and said screw bolts are adapted to bebrought into engage ment with the member 16 to sufficiently separate said members whereby the meniber 17 can be easily removed.

As illustrated in Figs. 1 and 2, the mold is pivoted off center and the small or lower end thereof constitutes theheavier end, consequently to maintain the mold in a vertical position, it is necessary to use a stop 68, which is secured to a bottom rail-of the table 3. To maintain the mold in a horizontal position, the top of the table, adjacont to an end, thereof, is provided with a slide bar 69 and this bar is shifted under the heavy end of the mold to'hold the same in a horizontal position, whereby the member 17 can be easily removed from the member 16.

With the member 17 removed, the collapsible core and the end cores can be easily and quickly placed in position. The member 17 is then clamped upon the member 16 and the pins 66 placed in their respective openings to hold the long end core 40 and the collapsible core. The slide bar 69 is then retracted to allow the mohl to swing to a vertical position. at which time the truck 2 is shifted beneath the furnace to aline the gate of the mold with the discharge pipe 5) of the pot The valve 10 can then be raised to allow the molten metal within the pot to [low into the gate of the mold. The molten metal passes into the matrices 2t and 2.") through the medium of the various channels; the air escaping through the air vents. On account of the angular position of the mold beneath the furnace. the molten metal is directed into the main channel which gradually fills and supplies the bra neh channels 23 with molten metal. As the matrix 2% becomes filled the molten metal surrounds the chamber core and enters the matrix The operator can then release the valve 10 which closes by gravity and then withdraw the truck 2 from beneath the furnace. The next operation is that of swinging the mold to a horizontal -position, releasing the clamps, removing the pins 66, withdrawing the cores, tightening the screw bolts 67 and then removing the member 17 from the member 16. The molded trap, which has been shown in longitudinal section in Fig. 3 and in perspective in Fig. 13 can then be removed from the member 16 and finished to provide a completed article. As shown in Fig. 13, the trap has a chamber 70, a long outlet pipe or leg 71', a short inlet pipe or leg 72, and a detachable cap 73, said cap forming the bottom of the chamber 70.

The air vents 27 are not of sutticient size to permit of the escape of molten metal during the pouring operation, and should molten metal enter said vents it is chilled or coagulatcd to that extent as to form a closure. We attach considerable importance to the up-feed of the molten metal from the main channel 22, as this manner of feeding molten .metal into the matrices precludes any possibility of air holes or other imperfections in the completed article. The angularity of the mold beneath the-pot also contributes to this result and by reason of the gate of a mold being readily observed there is a minimum of waste, and even though a small fin may be formed at the upper end of the chamber, this fin can be roadil y removed and returned to the melting pot.

\Vhat we claim is:

1. In a trap molding apparatus, the combination with a melting pot, of a truck adapted to be shifted beneath said pot, and an angularly disposed mold pivotally supported by said truck and adapted to receive molten metal from said pot.

2. ln a. trap molding apparatus, the combination with a melting pot of a truck adapted to be shifted beneath said pot, an angularly disposed mold pivotally supported by said truck and adapted to receive molten metal from said pot, and means in connection with said truck for maintaining said mold in a vertical position beneath said pot.

3. In a trap molding apparatus. the combination with a melting pot, of a truck adapted to be shifted beneath said pot, an angularly disposed mold pivotally supported by said truck and adapted to receive molten metal. from said pot, means in connection with said truck for maintaining said mold in a vertical position beneath said pot, and means in connection with said truck adapted to temporarily hold said mold in a horizontal position.

4. In a trap molding apparatus the combination with a melting pot, ot a truck adapted to be shifted beneath said pot, an angularly disposed two-part mold having one part thereof pivotally supported by said truck, and means in connection with said truck for maintaining said mold in a vertical position beneath said pot.

In a molding apparatus, the combination with a movable table, of a two-part mold having a part thereof pivotally supported at an inclination by said table and adapted to be swung to a horizontal plane transversely of said table, and means at a side of said table and adapted to be shifted under an end of said mold for maintaining said mold in an adjusted position.

In testimony whereof we aflix our signatures in presence of two witnesses.

J OHN B. LUKOMSKI.

ANTHONY LUKOMSKI.

\Vitnesses ANNA M. Donn, C. R. STICKNEY. 

